Interested in how much energy efficient windows could be saving you?

The ENERGY STAR savings estimates for windows are based on energy calculations performed by D+R International using Lawrence Berkeley National Laboratory’s (LBNL) energy use and cost model based on EnergyPlus 9.5 for typical homes in 132 U.S. cities.

Graphic and information courtesy of D&R International.

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If you are interested in more information on ENERGY STAR’s methodology for these window cost savings, please visit this methodology page.